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Fix Word on Mac Keeps Signing Out When Opening Teams Documents
Question details
The user is experiencing repeated sign-outs in the Microsoft Word desktop app on Mac when opening a specific document from Microsoft Teams, preventing edits from saving reliably.
- Product
- Microsoft Word for Mac
- Device & OS
- Mac (MacBook Pro)
- Scenario
- Opening a school document from Microsoft Teams directly into the desktop Word application using the 'Open in app' function.
- Observed behavior
- The Word application continuously signs the user out. Clearing Mac keychain entries only provides a temporary 10-minute fix, and document changes fail to save consistently.
Ensure your macOS and the Microsoft Word desktop application are updated to their latest versions, as outdated software can cause authentication tokens to expire prematurely.
Test the Document in Word for the Web
Use the browser version of Word to isolate whether the continuous sign-out issue is caused by the desktop application or a broader account problem.
Since the issue occurs specifically when using the 'Open in app' feature, testing the file online helps determine if the desktop setup is the root cause. If the web version works flawlessly, the issue lies within the local Mac environment or the desktop app's connection to the school account.
Log into your school Microsoft Teams account via a web browser rather than the desktop application.
Navigate to the specific channel or chat where the Word document is stored.
Click the three dots (More options) next to the document, select 'Open', and choose 'Open in browser'.
Edit the document for more than 10 minutes to see if the session remains active and changes are saved automatically.
Isolate the Issue to a Single File
Check if other Word documents opened from Teams behave the same way to rule out file-specific corruption or permissions issues.
Try WPS Office for a Seamless Mac Document Experience
If Microsoft Word continues to sign you out or fails to sync properly on your Mac, consider switching to WPS Office. It provides a lightweight, highly compatible alternative for editing your school documents offline without the frustrating and continuous sign-in glitches.
- 1. Download the Document: In Microsoft Teams, click the three dots next to your file and select 'Download' to save it locally to your Mac.
- 2. Install WPS Office: Download and install the free WPS Office suite for Mac from the official website.
- 3. Edit Seamlessly: Right-click your downloaded .docx file, choose 'Open With', and select WPS Office to edit without sign-out interruptions.
Frequently Asked Questions
Why does Word on my Mac keep asking me to sign in?
This is often caused by a conflict in your Mac's Keychain credentials, expired authentication tokens tied to your Microsoft 365 school/work account, or a corrupted Office cache preventing a persistent connection.
Should I keep deleting my Mac Keychain entries to fix the Word sign-in loop?
No. While deleting Keychain entries can temporarily force the app to ask for fresh credentials, repeatedly doing this only offers a short-term fix (often just 10 minutes) and can cause further synchronization issues. It is better to contact your school's IT administrator.
How can I safely save my work if Word repeatedly signs me out?
If you are actively working and get signed out, immediately use the 'Save As' function to save a local copy of the document to your Mac's hard drive (e.g., Desktop or Documents folder) to ensure your edits are not lost. You can upload it back to Teams later.
Can I open Teams documents with other software if Word keeps crashing?
Yes. You can download the document directly from Microsoft Teams to your Mac and open it using alternative, highly compatible software like WPS Office to continue your work without relying on the problematic desktop app sync.
